Essilor International (compagnie Generale D'optique)

Essilor International

Olivier Beinat

Dominique Conte

Karl Arthur Klemm

Michèle Thomas

Jean-Louis Sirjean

Michele Thomas

Karen West

Luc Nouvelot

Frédéric Arrouy

Disclosed is a process of physical vapor deposition of a material layer on surfaces of a plurality of substrates (), wherein the plurality of substrates () are arranged on a dome () which rotates according to a dome rotation axis (); the material to be deposited is vacuum evaporated thanks to an energy beam from a target (); the energy beam interacts with a beam impact surface of the target chosen within the list consisting of a part of a main surface () and a part of an edge () of the target and wherein the material diffuses from the target to the substrates around a main diffusion axis () which intersects the dome () at an intersection point, I; and the angle &#x3b1; between the dome rotation axis () and the main diffusion axis () is chosen within the ranges of +5&#xb0; to +40&#xb0; or &#x2212;5&#xb0; to &#x2212;40&#xb0;.

Process for physical vapor deposition of a material layer on surfaces of a plurality of substrates

The invention relates to an optical article having antireflection properties, optionally antistatic properties, having a high thermal and abrasion resistance, as well as the method for producing the same. The article of the invention comprises a substrate and, starting from the substrate:

Optical article coated with a sub-layer and with a heat-resistant, multilayered antireflection coating, and method for producing same

An antireflection, antistatic transparent coating for an optical article, comprising at least one electrically conductive layer, wherein said electrically conductive layer contains at least one metal and has a thickness lower than or equal to 1 nm. The invention also relates to a an optical article having two main faces, at least one which being coated with the above antireflection, antistatic transparent coating and a process for depositing the above antireflection, antistatic transparent coating onto said optical article.

Optical article having an antistatic, antireflection coating and method of manufacturing same

The present invention relates to an optical article having anti-reflection properties and high thermal resistance, comprising a substrate having at least one main face coated with a multi-layer anti-reflection coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, wherein the ratio: is higher than 2.1. If the anti-reflection stack comprises at least one low refractive index layer having a physical thickness &#x2267;100 nm which is not the outermost layer of the anti-reflection coating, said relatively thick layer and the underlying layers are not taken into account in Rcalculation.

Optical article having a temperature-resistant anti-reflection coating with optimized thickness ratio of low index and high index layers

A distribution mask including at least two separate blanking panels ( ), one of which is mounted mobile. The two blanking panels ( ) are substantially coplanar, and, controlled by a common control unit ( ), both mounted continuously mobile between two extreme positions, namely, a close position, and for which the space (E) between them is minimal, and a spaced position, for which the space (E) is on the contrary at its maximum. The invention is particularly applicable to antiglare treatment of ophthalmic lenses.

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Charenton le Pont, France

Olivier Beinat